Hammer.



S. K. NIEMI.

HAMMER.

APPLICATION FILED nov. 20, 1912.

1,074,009. Patented Sept.23,1913.

3 SHEETS-SHEET 1L S. K. NIEMI.

HAMMER.

APPLICATION IILBD NOV.29,1912.

Patented Sept. 23, 1913.

3 SHEETS-SHEET 2.

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WM 8%, mgww w W COLUMBIA PLANOGRAPH 60., WASHINGTON, D. c.

S. K. NIEMI.

HAMMER.

APPLICATION FILED NOV. 29, 1912.

1,074,009, Patented Sept. 23, 1913.

3 SHEETS'SHEET 3.

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llNlThlD ta 'fl rt l hfi PATENT @FFlClil SAKARIAS KATKY'I NIEI /II, 0F TOWER, MINNESOTA.

HAMMER.

Application filed November 29, 1912.

To all whom it may concern:

Be it known that I, SAKARIAS Kfvricr'r Email, a citizen of the United States, residing at Tower, in the county of St. Louis and State of Minnesota, have invented new and useful Improvements in Hammers, of which the following is a specification.

The invention relates to metal forging and welding and more particularly to forging by the use of power hammers.

An object of the invention is to provide a hammer for subjecting metals and the like to severe blows in the process of forging and welding.

The invention embodies, among other features, a hammer that can either be manually operated or operated by suitable mechanical power, the hammer being of a reciprocating type in which a hammer body descends upon an anvil to strike the metal placed upon the anvil, the hammer body and anvil being; independently adjustable in order that the metals on the anvil can be struck on their faces or edges, with means for cushioning the blow of the hammer and means for adjusting the hammer to increase or decrease the normal distance between the hammer and the anvil.

In the further disclosure of the invention reference is to be had to the accompanying drawings, constituting a part of this specification, in which similar characters of reference denote corresponding parts in all the views, and in which:

Figure 1 is a side elevation of the device; Fig. 2 is a plan view; Fig. 3 is a vertical longitudinal sectional view of the structure disclosed in Fig. 1; Fig. i is an enlarged plan view of the pulley shifting member, parts of'the supporting frame of the member being shown in section; Fig. 5 is a vertical transverse sectional view taken on the line 5--5 in Fig. 2; Fig. (i is a vertical transverse sectional view taken on the line 6----6 in Fig. 2; and Fig. 7 is an enlarged vertical transverse sectional view taken on the line 77 in Fig. 1.

teferring more particularly to the views, use is made of a base 10 consisting of a plu rality of plates 11 connected by horizontally arranged girders 12. The base 10 is preferably set in concrete or cusl'iioned in any convenient manner so that, the force of a blow subjected by the hammer will not be trans- Specification of Letters Patent.

Fatcnted Sept. 23, 1913.

Serial No. 734,185.

mitted to the entire building in which the hammer is mounted.

ltie'idly mounted on one of the plates ll of the base ll) is a hollow block 13:3 having curved upper edges 14; on which are mounted to rotate an anvil 15, the said anvil being provided with a stem 16 depending within the block 13 and terminating at the lower end thereof in a fork 17 passing around a medial portion 18 of a threaded rod 1.) ar- "angcd in a horizontal position andjournaled on the block 13, a suitable operating wheel 20 being connected to one of the cxteriorly projecting ends of the rod 1!) and a suitable nut or head 21 being connected to the other extcriorly projecting end of the rod 19, it being thus seen that by operating the wheel 20 to turn the rod l9, th anvil 15 can be adjusted on the block 13 so that the upper face thereof will lie in a horizontal plane or at an angle thereto.

A plurality of similar uprights 22 project vertically from the base 10 at the rear extremity thenml and a beam 235 is journaled between the uprights E22 by passing a shaft Q-Il horizontally through the upper ends of the uprights, the said beam being: journaled between the uprights 22 in the manner menlioncd at a distance from the rear end of the beam, with the forward end of the beam terminating in an enlarged portion 25 on which is mounted to swing a hammer head 26 normally arranged in substantially vertical alincment with the anvil 15, the upper end of the said hammer head being bifurcated to receive therebetween a threaded rod 27 journaled between the upper end of the hammer head by passing a pin 2% through the hammer head and the rod. A stirrup 25) is secured to the beam 23 and journaled therebetween is a bearing; member 30 including a collar 31 on which is mounted to turn a knob 32 having threaded connection with the rod 27, connected to the hammer head 26, the mentioned bearing member 30, higether with the rod 27, the collar 31 and knob 32, constituting: an adjusting member 325 for the hammer head 26 and by means of which the under face of the hannncr head can be adjusted in parallel relation to the face oi? the anvil 15 or at an angle thereto.

A frame 33 is journaled between the up rights 22, on the shaft 24-, the forward end of the said frame terminating in a stirrup 34 through which the beam 23 passes, the mentioned stirrup 34, together with a thumb screw 35 having threaded connection with the stirrup and engaging an expansible spring 36 abutting against the beam 23, constituting a cushion member 37 for the beam, a similar thumb screw 38 having threaded connection with the rear end of the beam 23 and engaging an eXpa-nsible spring 39 abutting against the rear end of the frame 33 to constitute a second cushion member 40, the said cushion members being provided to reduce the shock of the blow produced by the hammer head 26 when the same comes in contact with the metal on the anvil 15 as will be readily understood by referring to the views. A beam adjusting member has connection with the beam 23 and frame 33 for the purpose of raising or lowering the beam, thus increasing or decreasing the distance between the anvil 15 and t'hehammer head 26, and the mentioned beam adjusting member 41 comprises a stirrup 42 provided with longitudinally extending slots 43 through which loosely project pins 44 extending late-rally from the beam 23, the lower ends of the stirrup 42 having pivotal connection with the frame 33 with a thumb screw 45 arranged for threaded connection with the stirrup 42 and engaging the upper edge of the beam 23 so that when the thumb screw is operated the beam can be raised or lowered against the expansible action of the springs 36 and 39 of the cushion members 37 and 40 respectively;

The uprights 22 are each preferably formed in the nature of an inverted V, thus forming guide-ways 46 on which a crank frame 47 is arranged to slide vertically, the said crank frame being substantially U- shaped and provided with journal boxes 48 in which a crank shaft 49 is journaled, the said crank shaft. being provided at one end thereof with a pulley 50 and at the other end thereof with handle 51 as shown. Spaced parallel arms 52, formed with the frame 33, depend from the said frame and the crank portion 53 of the crank shaft 49 is arranged therebetween so that when either the pulley 50 or handle 51 is operated a reciprocating motion will be imparted to the beam 23, thus raising or lowering the hammer head 26 relatively to the anvil 15. It

will now be seen that by raising or lowering of the base 10, a suitable connecting rod 57 being provided to connect the bell crank lever 56 with an arm 58 mounted to swing on the base 10 adjacent the block 13, a handle 59 having pivotal connection with the arm 58 adjacent the point of connection of the connecting rod 57, a contractile spring 60 being provided for connection with the forward end of the handle 59 and with the lower end of the arm 58 in order that a downward pull will be exerted on the handle 59 at all times so that a locking head 61 will extend into one of a series of notches 62, formed in the handle 59, the said locking head 61 being formed with a guide member 63 secured to a side'of the block 13 andhaving the handle 59 passed therethrough it on the uprights 22, for the purpose of in-.

creasing or decreasing the throw of the beam 23, the mentioned crank frame 47 will be locked in position by the locking head 61 extending into one of the notches 62 in the manner mentioned heretofore.

The pulley 50 is preferably mounted loosely upon the crank shaft 49 and can be readily secured in position to turn with the crank shaft by a friction clutch 64 comprising a head 65 keyed or otherwise secured rigidly on the crank shaft 49 and having mounted to swing thereon a plurality of clutch members 66, the mentioned pulley 50 being preferably of a hollow nature with the clutch members 66 arranged within the pulley and adapted to be engaged thereby and swung into'frictional engagement with the inner periphery of the pulley when the said extending rearwardly for pivotal connection with a slotted cam member 7 0 mounted to swing horizontally on a U-shaped portion 71 of the crank frame 47, a forked member 72 being mounted to swing on the Ushaped portion 71 and having the lower end thereof extending through the slot of the cam member 70 with the upper forked end of the member 72 encircling the end of the crank shaft 49 adjacent the outer face of the pulley 50 so that when a downward pressure is exerted on the foot lever 67 and against the action of the spring 68, the cam member 70 will be swung horizontally on the U-shaped portion 71, thus swinging the lower end of the member 72 toward the right or outwardly and the upper end of the member 72 toward the left or inwardly, thus exerting an inward pressure against the pulley 50 to move the same inwardly on the crank shaft 49, thus resulting in the frictional engagement of the clutch members 66 with the inner periphery of the pulley 50 in the manner mentioned heretofore. In order to normally space the hammer head 26 a slight distance from the anvil 15, a flat curved spring 73 is rigidly secured to the base 10 and the free end of the spring is adapted to engage the rear-most arm 52 of the frame 33, as shown in Fig. 1.

From the foregoing description it will thus be seen that in the use of the hammer described there is provided an adjustment for the anvil 15, an adjustment for the hammer head 26 and which has connection with the hammer head whereby the hammer head can be swung and adjusted out of vertical position, the anvil 15, by means of the adjustment therefor, being also movable so that the plane face thereof can be adjusted out of horizontal position. There is further more provided a means for raising or lowering the beam 23 and likewise the hammer head 26, the said adjustment residing in the slotted stirrup 4:2 with the pins at extending through the slots thereof and the beam 23 engaged by the thumb screw 45, the lower end of the stirrup having connection with the frame as mentioned heretofore. To insure a proper cushioning effect the cushion members 37 are provided and to normally space the hammer head 26 from the anvil 15 and also aid in cushioning the hammer head, the spring (8 is provided as mentioned heretofore. l urthermore, by actuating the handle 59 the crank frame 47 can be raised or lowered to increase or decrease the throw of the beam 23 and with the provision of the locking heads 61 and notches (32 the crank frame 47 can be locked in the desired position. The device described :an be either manually operated or can be connected with a suitable driving mechanism through the medium of the pulley 50 and which, by actuating the foot lever 67, can be held rigidly on the crank shaft 49 by the friction clutch 6 .1: in the manner described heretofore.

Thus from the foregoing description it will be noted that the hammer described can be used on metals of various shapes and sizes and is particularly adaptable for use in welding or forging metals, regardless of the particular shapes and sizes thereof.

Having thus described my invention, I claim:

1. In a hammer, the combination with a base, of uprights thereon, an anvil on the base, a beam mounted to swing on the uprights, a hammer head on the beam and movable therewith to engage the said anvil,

a frame for the said beam, a crank frame adjuslably mounted on the said uprights, and a crank shaft journaled on the said frank frame and having connection with the first mentioned frame for imparting a swinging movement to the said beam.

2. 'In a hammer, the combination with a base, of uprights thereon, an anvil on the base, a beam mounted to swing on the uprights, a hammer head on the beam and movable therewith to engage the said anvil, a frame for the said beam, a crank frame adjustably mounted on the said uprights, a c 'ank shaft journaled on the said crank frame and having connection with the first mentioned frame for imparting a swinging movement to the said beam, and means on the said base and having connection with the said crank frame for adjusting the said crank frame on the said uprights.

3. In a hammer, the combination with a base, of an anvil thereon, uprights on the base, a beam mounted to swing on the said uprights, a hammer head on the said beam and movable therewith to engage the said anvil, a frame for the said beam, cushion members connecting the said frame and said beam, a crank shaft movable vertically on the said uprights and having connection with the said frame to impart a swinging movement to the said beam when the said crank shaft is operated, and means mounted on the said frame and having connection with the said beam for raising and lowering the said beam relatively to the said anvil.

41;. In a hammer, the combination with a base, of an anvil thereon, uprights on the base, a beam mounted to swing on the said uprights, a hammer head on the said beam and movable therewith to engage the said anvil, a frame for the said beam, cushion members connecting the said frame and said beam, a crank shaft movable vertically on the said uprights and having connection with the said frame to impart a swinging movement to the said beam when the said crank shaft is operated, means mounted on the said frame and having connection with the said beam for raising and lowering the said beam relatively to the said anvil, and a spring on the said base and engaging the said frame to normally space the said hammer head from the said anvil.

5. In a hammer, the combination with a base, of an anvil thereon, uprights on the base, a beam mounted to swing on the said uprights, a hammer head on the said beam and movable therewith to engage the said anvil, a frame for the said beam, cushion members connecting the said frame and said beam, a crank shaft movable vertically on the said uprights and having connection with the said frame to impart a swingin movement to the said beam when the said crank shaft is operated, means mounted on the said frame and having connection with means for securing the said crank shaft in the said beam for raising and lowering the locked position on the said uprights. I 10 said beam relatively to the said anvil, a In testimony whereof I affix my signature spring on the said base and engaging the in presence of two Witnesses.

said frame to normally space the said ham- SAKARIAS KATKYT NIEMI, g mer head from the said anvil, means on the Witnesses; V a said base for moving the said crank shaft EMANUEL ERKHILA,

vertically on the said uprights, and locking KoUsT MARTTILA.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents Washington, D. C. 

